manpage updates

* Update title for ronn 0.7.3
* document --use-llvm
* document --ignore-dependencies

Library/Contributions/manpages/brew.1.md

-The missing package manager for OS X
-====================================
+brew(1) -- The missing package manager for OS X
+===============================================
 
 ## SYNOPSIS
 
@@ -40,12 +40,19 @@ didn't include with OS X.
     surrounded with slashes, then it is interpreted as a regular expression.
     If no search term is given, all available formula are displayed.
 
-  * `install [--debug]` <formula>:
+  * `install [--debug] [--use-llvm] [--ignore-dependencies]` <formula>:
     Installs <formula>.
 
     If `--debug` is passed and brewing fails, opens a shell inside the
     temporary folder used for compiling.
 
+    If `--use-llvm` is passed, attempt to compile using the LLVM front-end to GCC.
+    *NOTE*: Not all formulae are compatible with LLVM, especially C++-based ones.
+
+    If `--ignore-dependencies` is passed, skip installing any dependencies of
+    any kind. If they are not already present, the formula will probably fail to
+    install.
+
   * `install --interactive [--git]` <formula>:
     Downloads and patches <formula>, and then opens a shell. This allows the
     user to run `./configure --help` and otherwise determine how to turn the

share/man/man1/brew.1

-.\" generated with Ronn/v0.6.6
-.\" http://github.com/rtomayko/ronn/
+.\" generated with Ronn/v0.7.3
+.\" http://github.com/rtomayko/ronn/tree/0.7.3
 .
 .TH "BREW" "1" "June 2010" "Homebrew" "brew"
 .
@@ -44,12 +44,18 @@ Shows Homebrew and system configuration useful for debugging\. If you file a bug
 Performs a substring search of formula names for \fItext\fR\. If \fItext\fR is surrounded with slashes, then it is interpreted as a regular expression\. If no search term is given, all available formula are displayed\.
 .
 .TP
-\fBinstall [\-\-debug]\fR \fIformula\fR
+\fBinstall [\-\-debug] [\-\-use\-llvm] [\-\-ignore\-dependencies]\fR \fIformula\fR
 Installs \fIformula\fR\.
 .
 .IP
 If \fB\-\-debug\fR is passed and brewing fails, opens a shell inside the temporary folder used for compiling\.
 .
+.IP
+If \fB\-\-use\-llvm\fR is passed, attempt to compile using the LLVM front\-end to GCC\. \fINOTE\fR: Not all formulae are compatible with LLVM, especially C++\-based ones\.
+.
+.IP
+If \fB\-\-ignore\-dependencies\fR is passed, skip installing any dependencies of any kind\. If they are not already present, the formula will probably fail to install\.
+.
 .TP
 \fBinstall \-\-interactive [\-\-git]\fR \fIformula\fR
 Downloads and patches \fIformula\fR, and then opens a shell\. This allows the user to run \fB\./configure \-\-help\fR and otherwise determine how to turn the software package into a Homebrew formula\.